diff --git a/htdocs/core/class/commondocgenerator.class.php b/htdocs/core/class/commondocgenerator.class.php
index 631c88d2123..49a303208a8 100644
--- a/htdocs/core/class/commondocgenerator.class.php
+++ b/htdocs/core/class/commondocgenerator.class.php
@@ -1342,7 +1342,7 @@ abstract class CommonDocGenerator
 		if (!empty($fields))
 		{
 			// Sort extrafields by rank
-			uasort($fields, function($a, $b) {
+			uasort($fields, function ($a, $b) {
 				return  ($a->rank > $b->rank) ? 1 : -1;
 			});